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<div id="overview"><a href="../../../../../../../../api/org/jboss/netty/handler/codec/http/websocketx/WebSocketClientHandshaker13.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.handler.codec.http.websocketx;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.buffer.ChannelBuffer;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.buffer.ChannelBuffers;
<a class="jxr_linenumber" name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.Channel;
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFuture;
<a class="jxr_linenumber" name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelFutureListener;
<a class="jxr_linenumber" name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.ChannelPipeline;
<a class="jxr_linenumber" name="24" href="#24">24</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.channel.DefaultChannelFuture;
<a class="jxr_linenumber" name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.DefaultHttpRequest;
<a class="jxr_linenumber" name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpHeaders.Names;
<a class="jxr_linenumber" name="27" href="#27">27</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpHeaders.Values;
<a class="jxr_linenumber" name="28" href="#28">28</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpMethod;
<a class="jxr_linenumber" name="29" href="#29">29</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpRequest;
<a class="jxr_linenumber" name="30" href="#30">30</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpRequestEncoder;
<a class="jxr_linenumber" name="31" href="#31">31</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpResponse;
<a class="jxr_linenumber" name="32" href="#32">32</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpResponseDecoder;
<a class="jxr_linenumber" name="33" href="#33">33</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpResponseStatus;
<a class="jxr_linenumber" name="34" href="#34">34</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.handler.codec.http.HttpVersion;
<a class="jxr_linenumber" name="35" href="#35">35</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.logging.InternalLogger;
<a class="jxr_linenumber" name="36" href="#36">36</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.logging.InternalLoggerFactory;
<a class="jxr_linenumber" name="37" href="#37">37</a>  <strong class="jxr_keyword">import</strong> org.jboss.netty.util.CharsetUtil;
<a class="jxr_linenumber" name="38" href="#38">38</a>  
<a class="jxr_linenumber" name="39" href="#39">39</a>  <strong class="jxr_keyword">import</strong> java.net.URI;
<a class="jxr_linenumber" name="40" href="#40">40</a>  <strong class="jxr_keyword">import</strong> java.util.Map;
<a class="jxr_linenumber" name="41" href="#41">41</a>  
<a class="jxr_linenumber" name="42" href="#42">42</a>  <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="43" href="#43">43</a>  <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="44" href="#44">44</a>  <em class="jxr_javadoccomment"> * Performs client side opening and closing handshakes for web socket specification version &lt;a</em>
<a class="jxr_linenumber" name="45" href="#45">45</a>  <em class="jxr_javadoccomment"> * href="<a href="http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-17" target="alexandria_uri">http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-17</a>" &gt;draft-ietf-hybi-thewebsocketprotocol-</em>
<a class="jxr_linenumber" name="46" href="#46">46</a>  <em class="jxr_javadoccomment"> * 17&lt;/a&gt;</em>
<a class="jxr_linenumber" name="47" href="#47">47</a>  <em class="jxr_javadoccomment"> * &lt;/p&gt;</em>
<a class="jxr_linenumber" name="48" href="#48">48</a>  <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="49" href="#49">49</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> WebSocketClientHandshaker13 <strong class="jxr_keyword">extends</strong> <a href="../../../../../../../org/jboss/netty/handler/codec/http/websocketx/WebSocketClientHandshaker.html">WebSocketClientHandshaker</a> {
<a class="jxr_linenumber" name="50" href="#50">50</a>  
<a class="jxr_linenumber" name="51" href="#51">51</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <a href="../../../../../../../org/jboss/netty/logging/InternalLogger.html">InternalLogger</a> logger = InternalLoggerFactory.getInstance(WebSocketClientHandshaker13.<strong class="jxr_keyword">class</strong>);
<a class="jxr_linenumber" name="52" href="#52">52</a>  
<a class="jxr_linenumber" name="53" href="#53">53</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String MAGIC_GUID = <span class="jxr_string">"258EAFA5-E914-47DA-95CA-C5AB0DC85B11"</span>;
<a class="jxr_linenumber" name="54" href="#54">54</a>  
<a class="jxr_linenumber" name="55" href="#55">55</a>      <strong class="jxr_keyword">private</strong> String expectedChallengeResponseString;
<a class="jxr_linenumber" name="56" href="#56">56</a>  
<a class="jxr_linenumber" name="57" href="#57">57</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> allowExtensions;
<a class="jxr_linenumber" name="58" href="#58">58</a>  
<a class="jxr_linenumber" name="59" href="#59">59</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="60" href="#60">60</a>  <em class="jxr_javadoccomment">     * Constructor with default values</em>
<a class="jxr_linenumber" name="61" href="#61">61</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="62" href="#62">62</a>  <em class="jxr_javadoccomment">     * @param webSocketURL</em>
<a class="jxr_linenumber" name="63" href="#63">63</a>  <em class="jxr_javadoccomment">     *            URL for web socket communications. e.g "ws://myhost.com/mypath". Subsequent web socket frames will be</em>
<a class="jxr_linenumber" name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     *            sent to this URL.</em>
<a class="jxr_linenumber" name="65" href="#65">65</a>  <em class="jxr_javadoccomment">     * @param version</em>
<a class="jxr_linenumber" name="66" href="#66">66</a>  <em class="jxr_javadoccomment">     *            Version of web socket specification to use to connect to the server</em>
<a class="jxr_linenumber" name="67" href="#67">67</a>  <em class="jxr_javadoccomment">     * @param subprotocol</em>
<a class="jxr_linenumber" name="68" href="#68">68</a>  <em class="jxr_javadoccomment">     *            Sub protocol request sent to the server.</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>  <em class="jxr_javadoccomment">     * @param allowExtensions</em>
<a class="jxr_linenumber" name="70" href="#70">70</a>  <em class="jxr_javadoccomment">     *            Allow extensions to be used in the reserved bits of the web socket frame</em>
<a class="jxr_linenumber" name="71" href="#71">71</a>  <em class="jxr_javadoccomment">     * @param customHeaders</em>
<a class="jxr_linenumber" name="72" href="#72">72</a>  <em class="jxr_javadoccomment">     *            Map of custom headers to add to the client request</em>
<a class="jxr_linenumber" name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="74" href="#74">74</a>      <strong class="jxr_keyword">public</strong> WebSocketClientHandshaker13(URI webSocketURL, <a href="../../../../../../../org/jboss/netty/handler/codec/http/websocketx/WebSocketVersion.html">WebSocketVersion</a> version, String subprotocol,
<a class="jxr_linenumber" name="75" href="#75">75</a>              <strong class="jxr_keyword">boolean</strong> allowExtensions, Map&lt;String, String&gt; customHeaders) {
<a class="jxr_linenumber" name="76" href="#76">76</a>          <strong class="jxr_keyword">this</strong>(webSocketURL, version, subprotocol, allowExtensions, customHeaders, Long.MAX_VALUE);
<a class="jxr_linenumber" name="77" href="#77">77</a>      }
<a class="jxr_linenumber" name="78" href="#78">78</a>  
<a class="jxr_linenumber" name="79" href="#79">79</a>      <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="80" href="#80">80</a>  <em class="jxr_javadoccomment">     * Constructor</em>
<a class="jxr_linenumber" name="81" href="#81">81</a>  <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="82" href="#82">82</a>  <em class="jxr_javadoccomment">     * @param webSocketURL</em>
<a class="jxr_linenumber" name="83" href="#83">83</a>  <em class="jxr_javadoccomment">     *            URL for web socket communications. e.g "ws://myhost.com/mypath". Subsequent web socket frames will be</em>
<a class="jxr_linenumber" name="84" href="#84">84</a>  <em class="jxr_javadoccomment">     *            sent to this URL.</em>
<a class="jxr_linenumber" name="85" href="#85">85</a>  <em class="jxr_javadoccomment">     * @param version</em>
<a class="jxr_linenumber" name="86" href="#86">86</a>  <em class="jxr_javadoccomment">     *            Version of web socket specification to use to connect to the server</em>
<a class="jxr_linenumber" name="87" href="#87">87</a>  <em class="jxr_javadoccomment">     * @param subprotocol</em>
<a class="jxr_linenumber" name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     *            Sub protocol request sent to the server.</em>
<a class="jxr_linenumber" name="89" href="#89">89</a>  <em class="jxr_javadoccomment">     * @param allowExtensions</em>
<a class="jxr_linenumber" name="90" href="#90">90</a>  <em class="jxr_javadoccomment">     *            Allow extensions to be used in the reserved bits of the web socket frame</em>
<a class="jxr_linenumber" name="91" href="#91">91</a>  <em class="jxr_javadoccomment">     * @param customHeaders</em>
<a class="jxr_linenumber" name="92" href="#92">92</a>  <em class="jxr_javadoccomment">     *            Map of custom headers to add to the client request</em>
<a class="jxr_linenumber" name="93" href="#93">93</a>  <em class="jxr_javadoccomment">     * @param maxFramePayloadLength</em>
<a class="jxr_linenumber" name="94" href="#94">94</a>  <em class="jxr_javadoccomment">     *            Maximum length of a frame's payload</em>
<a class="jxr_linenumber" name="95" href="#95">95</a>  <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="96" href="#96">96</a>      <strong class="jxr_keyword">public</strong> WebSocketClientHandshaker13(URI webSocketURL, <a href="../../../../../../../org/jboss/netty/handler/codec/http/websocketx/WebSocketVersion.html">WebSocketVersion</a> version, String subprotocol,
<a class="jxr_linenumber" name="97" href="#97">97</a>              <strong class="jxr_keyword">boolean</strong> allowExtensions, Map&lt;String, String&gt; customHeaders, <strong class="jxr_keyword">long</strong> maxFramePayloadLength) {
<a class="jxr_linenumber" name="98" href="#98">98</a>          <strong class="jxr_keyword">super</strong>(webSocketURL, version, subprotocol, customHeaders, maxFramePayloadLength);
<a class="jxr_linenumber" name="99" href="#99">99</a>          <strong class="jxr_keyword">this</strong>.allowExtensions = allowExtensions;
<a class="jxr_linenumber" name="100" href="#100">100</a>     }
<a class="jxr_linenumber" name="101" href="#101">101</a> 
<a class="jxr_linenumber" name="102" href="#102">102</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_javadoccomment">     * /**</em>
<a class="jxr_linenumber" name="104" href="#104">104</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">     * Sends the opening request to the server:</em>
<a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment">     * &lt;/p&gt;</em>
<a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment">     * &lt;pre&gt;</em>
<a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment">     * GET /chat HTTP/1.1</em>
<a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment">     * Host: server.example.com</em>
<a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment">     * Upgrade: websocket</em>
<a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment">     * Connection: Upgrade</em>
<a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment">     * Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==</em>
<a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment">     * Sec-WebSocket-Origin: <a href="http://example.com" target="alexandria_uri">http://example.com</a></em>
<a class="jxr_linenumber" name="115" href="#115">115</a> <em class="jxr_javadoccomment">     * Sec-WebSocket-Protocol: chat, superchat</em>
<a class="jxr_linenumber" name="116" href="#116">116</a> <em class="jxr_javadoccomment">     * Sec-WebSocket-Version: 13</em>
<a class="jxr_linenumber" name="117" href="#117">117</a> <em class="jxr_javadoccomment">     * &lt;/pre&gt;</em>
<a class="jxr_linenumber" name="118" href="#118">118</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_javadoccomment">     * @param channel</em>
<a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_javadoccomment">     *            Channel into which we can write our request</em>
<a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="122" href="#122">122</a>     @Override
<a class="jxr_linenumber" name="123" href="#123">123</a>     <strong class="jxr_keyword">public</strong> <a href="../../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> handshake(<a href="../../../../../../../org/jboss/netty/channel/Channel.html">Channel</a> channel) <strong class="jxr_keyword">throws</strong> Exception {
<a class="jxr_linenumber" name="124" href="#124">124</a>         <em class="jxr_comment">// Get path</em>
<a class="jxr_linenumber" name="125" href="#125">125</a>         URI wsURL = getWebSocketUrl();
<a class="jxr_linenumber" name="126" href="#126">126</a>         String path = wsURL.getPath();
<a class="jxr_linenumber" name="127" href="#127">127</a>         <strong class="jxr_keyword">if</strong> (wsURL.getQuery() != <strong class="jxr_keyword">null</strong> &amp;&amp; wsURL.getQuery().length() &gt; 0) {
<a class="jxr_linenumber" name="128" href="#128">128</a>             path = wsURL.getPath() + '?' + wsURL.getQuery();
<a class="jxr_linenumber" name="129" href="#129">129</a>         }
<a class="jxr_linenumber" name="130" href="#130">130</a> 
<a class="jxr_linenumber" name="131" href="#131">131</a>         <strong class="jxr_keyword">if</strong> (path == <strong class="jxr_keyword">null</strong> || path.length() == 0) {
<a class="jxr_linenumber" name="132" href="#132">132</a>             path = <span class="jxr_string">"/"</span>;
<a class="jxr_linenumber" name="133" href="#133">133</a>         }
<a class="jxr_linenumber" name="134" href="#134">134</a> 
<a class="jxr_linenumber" name="135" href="#135">135</a>         <em class="jxr_comment">// Get 16 bit nonce and base 64 encode it</em>
<a class="jxr_linenumber" name="136" href="#136">136</a>         <a href="../../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> nonce = ChannelBuffers.wrappedBuffer(WebSocketUtil.randomBytes(16));
<a class="jxr_linenumber" name="137" href="#137">137</a>         String key = WebSocketUtil.base64(nonce);
<a class="jxr_linenumber" name="138" href="#138">138</a> 
<a class="jxr_linenumber" name="139" href="#139">139</a>         String acceptSeed = key + MAGIC_GUID;
<a class="jxr_linenumber" name="140" href="#140">140</a>         <a href="../../../../../../../org/jboss/netty/buffer/ChannelBuffer.html">ChannelBuffer</a> sha1 = WebSocketUtil.sha1(ChannelBuffers.copiedBuffer(acceptSeed, CharsetUtil.US_ASCII));
<a class="jxr_linenumber" name="141" href="#141">141</a>         expectedChallengeResponseString = WebSocketUtil.base64(sha1);
<a class="jxr_linenumber" name="142" href="#142">142</a> 
<a class="jxr_linenumber" name="143" href="#143">143</a>         <strong class="jxr_keyword">if</strong> (logger.isDebugEnabled()) {
<a class="jxr_linenumber" name="144" href="#144">144</a>             logger.debug(String.format(<span class="jxr_string">"WS Version 13 Client Handshake key: %s. Expected response: %s."</span>, key,
<a class="jxr_linenumber" name="145" href="#145">145</a>                     expectedChallengeResponseString));
<a class="jxr_linenumber" name="146" href="#146">146</a>         }
<a class="jxr_linenumber" name="147" href="#147">147</a> 
<a class="jxr_linenumber" name="148" href="#148">148</a>         <em class="jxr_comment">// Format request</em>
<a class="jxr_linenumber" name="149" href="#149">149</a>         <a href="../../../../../../../org/jboss/netty/handler/codec/http/HttpRequest.html">HttpRequest</a> request = <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/jboss/netty/handler/codec/http/DefaultHttpRequest.html">DefaultHttpRequest</a>(HttpVersion.HTTP_1_1, HttpMethod.GET, path);
<a class="jxr_linenumber" name="150" href="#150">150</a>         request.addHeader(Names.UPGRADE, Values.WEBSOCKET.toLowerCase());
<a class="jxr_linenumber" name="151" href="#151">151</a>         request.addHeader(Names.CONNECTION, Values.UPGRADE);
<a class="jxr_linenumber" name="152" href="#152">152</a>         request.addHeader(Names.SEC_WEBSOCKET_KEY, key);
<a class="jxr_linenumber" name="153" href="#153">153</a>         request.addHeader(Names.HOST, wsURL.getHost());
<a class="jxr_linenumber" name="154" href="#154">154</a> 
<a class="jxr_linenumber" name="155" href="#155">155</a>         <strong class="jxr_keyword">int</strong> wsPort = wsURL.getPort();
<a class="jxr_linenumber" name="156" href="#156">156</a>         String originValue = <span class="jxr_string">"http://"</span> + wsURL.getHost();
<a class="jxr_linenumber" name="157" href="#157">157</a>         <strong class="jxr_keyword">if</strong> (wsPort != 80 &amp;&amp; wsPort != 443) {
<a class="jxr_linenumber" name="158" href="#158">158</a>             <em class="jxr_comment">// if the port is not standard (80/443) its needed to add the port to the header.</em>
<a class="jxr_linenumber" name="159" href="#159">159</a>             <em class="jxr_comment">// See http://tools.ietf.org/html/rfc6454#section-6.2</em>
<a class="jxr_linenumber" name="160" href="#160">160</a>             originValue = originValue + ':' + wsPort;
<a class="jxr_linenumber" name="161" href="#161">161</a>         }
<a class="jxr_linenumber" name="162" href="#162">162</a>         request.addHeader(Names.ORIGIN, originValue);
<a class="jxr_linenumber" name="163" href="#163">163</a> 
<a class="jxr_linenumber" name="164" href="#164">164</a>         String expectedSubprotocol = getExpectedSubprotocol();
<a class="jxr_linenumber" name="165" href="#165">165</a>         <strong class="jxr_keyword">if</strong> (expectedSubprotocol != <strong class="jxr_keyword">null</strong> &amp;&amp; expectedSubprotocol.length() != 0) {
<a class="jxr_linenumber" name="166" href="#166">166</a>             request.addHeader(Names.SEC_WEBSOCKET_PROTOCOL, expectedSubprotocol);
<a class="jxr_linenumber" name="167" href="#167">167</a>         }
<a class="jxr_linenumber" name="168" href="#168">168</a> 
<a class="jxr_linenumber" name="169" href="#169">169</a>         request.addHeader(Names.SEC_WEBSOCKET_VERSION, <span class="jxr_string">"13"</span>);
<a class="jxr_linenumber" name="170" href="#170">170</a> 
<a class="jxr_linenumber" name="171" href="#171">171</a>         <strong class="jxr_keyword">if</strong> (customHeaders != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="172" href="#172">172</a>             <strong class="jxr_keyword">for</strong> (Map.Entry&lt;String, String&gt; e: customHeaders.entrySet()) {
<a class="jxr_linenumber" name="173" href="#173">173</a>                 request.addHeader(e.getKey(), e.getValue());
<a class="jxr_linenumber" name="174" href="#174">174</a>             }
<a class="jxr_linenumber" name="175" href="#175">175</a>         }
<a class="jxr_linenumber" name="176" href="#176">176</a> 
<a class="jxr_linenumber" name="177" href="#177">177</a>         <a href="../../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> future = channel.write(request);
<a class="jxr_linenumber" name="178" href="#178">178</a>         <strong class="jxr_keyword">final</strong> <a href="../../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> handshakeFuture = <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/jboss/netty/channel/DefaultChannelFuture.html">DefaultChannelFuture</a>(channel, false);
<a class="jxr_linenumber" name="179" href="#179">179</a> 
<a class="jxr_linenumber" name="180" href="#180">180</a>         future.addListener(<strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/jboss/netty/channel/ChannelFutureListener.html">ChannelFutureListener</a>() {
<a class="jxr_linenumber" name="181" href="#181">181</a>             <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> operationComplete(<a href="../../../../../../../org/jboss/netty/channel/ChannelFuture.html">ChannelFuture</a> future) {
<a class="jxr_linenumber" name="182" href="#182">182</a>                 <a href="../../../../../../../org/jboss/netty/channel/ChannelPipeline.html">ChannelPipeline</a> p = future.getChannel().getPipeline();
<a class="jxr_linenumber" name="183" href="#183">183</a>                 p.replace(HttpRequestEncoder.<strong class="jxr_keyword">class</strong>, <span class="jxr_string">"ws-encoder"</span>, <strong class="jxr_keyword">new</strong> WebSocket13FrameEncoder(<strong class="jxr_keyword">true</strong>));
<a class="jxr_linenumber" name="184" href="#184">184</a> 
<a class="jxr_linenumber" name="185" href="#185">185</a>                 <strong class="jxr_keyword">if</strong> (future.isSuccess()) {
<a class="jxr_linenumber" name="186" href="#186">186</a>                     handshakeFuture.setSuccess();
<a class="jxr_linenumber" name="187" href="#187">187</a>                 } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="188" href="#188">188</a>                     handshakeFuture.setFailure(future.getCause());
<a class="jxr_linenumber" name="189" href="#189">189</a>                 }
<a class="jxr_linenumber" name="190" href="#190">190</a>             }
<a class="jxr_linenumber" name="191" href="#191">191</a>         });
<a class="jxr_linenumber" name="192" href="#192">192</a> 
<a class="jxr_linenumber" name="193" href="#193">193</a>         <strong class="jxr_keyword">return</strong> handshakeFuture;
<a class="jxr_linenumber" name="194" href="#194">194</a>     }
<a class="jxr_linenumber" name="195" href="#195">195</a> 
<a class="jxr_linenumber" name="196" href="#196">196</a>     <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="197" href="#197">197</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a class="jxr_linenumber" name="198" href="#198">198</a> <em class="jxr_javadoccomment">     * Process server response:</em>
<a class="jxr_linenumber" name="199" href="#199">199</a> <em class="jxr_javadoccomment">     * &lt;/p&gt;</em>
<a class="jxr_linenumber" name="200" href="#200">200</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="201" href="#201">201</a> <em class="jxr_javadoccomment">     * &lt;pre&gt;</em>
<a class="jxr_linenumber" name="202" href="#202">202</a> <em class="jxr_javadoccomment">     * HTTP/1.1 101 Switching Protocols</em>
<a class="jxr_linenumber" name="203" href="#203">203</a> <em class="jxr_javadoccomment">     * Upgrade: websocket</em>
<a class="jxr_linenumber" name="204" href="#204">204</a> <em class="jxr_javadoccomment">     * Connection: Upgrade</em>
<a class="jxr_linenumber" name="205" href="#205">205</a> <em class="jxr_javadoccomment">     * Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=</em>
<a class="jxr_linenumber" name="206" href="#206">206</a> <em class="jxr_javadoccomment">     * Sec-WebSocket-Protocol: chat</em>
<a class="jxr_linenumber" name="207" href="#207">207</a> <em class="jxr_javadoccomment">     * &lt;/pre&gt;</em>
<a class="jxr_linenumber" name="208" href="#208">208</a> <em class="jxr_javadoccomment">     *</em>
<a class="jxr_linenumber" name="209" href="#209">209</a> <em class="jxr_javadoccomment">     * @param channel</em>
<a class="jxr_linenumber" name="210" href="#210">210</a> <em class="jxr_javadoccomment">     *            Channel</em>
<a class="jxr_linenumber" name="211" href="#211">211</a> <em class="jxr_javadoccomment">     * @param response</em>
<a class="jxr_linenumber" name="212" href="#212">212</a> <em class="jxr_javadoccomment">     *            HTTP response returned from the server for the request sent by beginOpeningHandshake00().</em>
<a class="jxr_linenumber" name="213" href="#213">213</a> <em class="jxr_javadoccomment">     * @throws WebSocketHandshakeException</em>
<a class="jxr_linenumber" name="214" href="#214">214</a> <em class="jxr_javadoccomment">     */</em>
<a class="jxr_linenumber" name="215" href="#215">215</a>     @Override
<a class="jxr_linenumber" name="216" href="#216">216</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> finishHandshake(<a href="../../../../../../../org/jboss/netty/channel/Channel.html">Channel</a> channel, <a href="../../../../../../../org/jboss/netty/handler/codec/http/HttpResponse.html">HttpResponse</a> response) {
<a class="jxr_linenumber" name="217" href="#217">217</a>         <strong class="jxr_keyword">final</strong> <a href="../../../../../../../org/jboss/netty/handler/codec/http/HttpResponseStatus.html">HttpResponseStatus</a> status = HttpResponseStatus.SWITCHING_PROTOCOLS;
<a class="jxr_linenumber" name="218" href="#218">218</a> 
<a class="jxr_linenumber" name="219" href="#219">219</a>         <strong class="jxr_keyword">if</strong> (!response.getStatus().equals(status)) {
<a class="jxr_linenumber" name="220" href="#220">220</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/jboss/netty/handler/codec/http/websocketx/WebSocketHandshakeException.html">WebSocketHandshakeException</a>(<span class="jxr_string">"Invalid handshake response status: "</span> + response.getStatus());
<a class="jxr_linenumber" name="221" href="#221">221</a>         }
<a class="jxr_linenumber" name="222" href="#222">222</a> 
<a class="jxr_linenumber" name="223" href="#223">223</a>         String upgrade = response.getHeader(Names.UPGRADE);
<a class="jxr_linenumber" name="224" href="#224">224</a>         <em class="jxr_comment">// Upgrade header should be matched case-insensitive.</em>
<a class="jxr_linenumber" name="225" href="#225">225</a>         <em class="jxr_comment">// See https://github.com/netty/netty/issues/278</em>
<a class="jxr_linenumber" name="226" href="#226">226</a>         <strong class="jxr_keyword">if</strong> (upgrade == <strong class="jxr_keyword">null</strong> || !upgrade.toLowerCase().equals(Values.WEBSOCKET.toLowerCase())) {
<a class="jxr_linenumber" name="227" href="#227">227</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/jboss/netty/handler/codec/http/websocketx/WebSocketHandshakeException.html">WebSocketHandshakeException</a>(<span class="jxr_string">"Invalid handshake response upgrade: "</span>
<a class="jxr_linenumber" name="228" href="#228">228</a>                     + response.getHeader(Names.UPGRADE));
<a class="jxr_linenumber" name="229" href="#229">229</a>         }
<a class="jxr_linenumber" name="230" href="#230">230</a> 
<a class="jxr_linenumber" name="231" href="#231">231</a>         <em class="jxr_comment">// Connection header should be matched case-insensitive.</em>
<a class="jxr_linenumber" name="232" href="#232">232</a>         <em class="jxr_comment">// See https://github.com/netty/netty/issues/278</em>
<a class="jxr_linenumber" name="233" href="#233">233</a>         String connection = response.getHeader(Names.CONNECTION);
<a class="jxr_linenumber" name="234" href="#234">234</a>         <strong class="jxr_keyword">if</strong> (connection == <strong class="jxr_keyword">null</strong> || !connection.toLowerCase().equals(Values.UPGRADE.toLowerCase())) {
<a class="jxr_linenumber" name="235" href="#235">235</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/jboss/netty/handler/codec/http/websocketx/WebSocketHandshakeException.html">WebSocketHandshakeException</a>(<span class="jxr_string">"Invalid handshake response connection: "</span>
<a class="jxr_linenumber" name="236" href="#236">236</a>                     + response.getHeader(Names.CONNECTION));
<a class="jxr_linenumber" name="237" href="#237">237</a>         }
<a class="jxr_linenumber" name="238" href="#238">238</a> 
<a class="jxr_linenumber" name="239" href="#239">239</a>         String accept = response.getHeader(Names.SEC_WEBSOCKET_ACCEPT);
<a class="jxr_linenumber" name="240" href="#240">240</a>         <strong class="jxr_keyword">if</strong> (accept == <strong class="jxr_keyword">null</strong> || !accept.equals(expectedChallengeResponseString)) {
<a class="jxr_linenumber" name="241" href="#241">241</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/jboss/netty/handler/codec/http/websocketx/WebSocketHandshakeException.html">WebSocketHandshakeException</a>(String.format(<span class="jxr_string">"Invalid challenge. Actual: %s. Expected: %s"</span>, accept,
<a class="jxr_linenumber" name="242" href="#242">242</a>                     expectedChallengeResponseString));
<a class="jxr_linenumber" name="243" href="#243">243</a>         }
<a class="jxr_linenumber" name="244" href="#244">244</a> 
<a class="jxr_linenumber" name="245" href="#245">245</a>         String subprotocol = response.getHeader(Names.SEC_WEBSOCKET_PROTOCOL);
<a class="jxr_linenumber" name="246" href="#246">246</a>         setActualSubprotocol(subprotocol);
<a class="jxr_linenumber" name="247" href="#247">247</a> 
<a class="jxr_linenumber" name="248" href="#248">248</a>         setHandshakeComplete();
<a class="jxr_linenumber" name="249" href="#249">249</a> 
<a class="jxr_linenumber" name="250" href="#250">250</a>         channel.getPipeline().get(HttpResponseDecoder.<strong class="jxr_keyword">class</strong>).replace(<span class="jxr_string">"ws-decoder"</span>,
<a class="jxr_linenumber" name="251" href="#251">251</a>                 <strong class="jxr_keyword">new</strong> WebSocket13FrameDecoder(false, allowExtensions, getMaxFramePayloadLength()));
<a class="jxr_linenumber" name="252" href="#252">252</a>     }
<a class="jxr_linenumber" name="253" href="#253">253</a> }
</pre>
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